Jump.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Playables;
using UnityEngine.Animations;

public class Jump : MonoBehaviour {

	PlayableGraph graph;

	[SerializeField] Animator animator = null;
	[SerializeField] AnimationClip clip = null;

	void Awake()
	{
		graph = animator.playableGraph;
	}

	void Start()
	{
		var clipPlayable = AnimationClipPlayable.Create (graph, clip);
		var output = graph.GetOutput (0);
		var layer = AnimationLayerMixerPlayable.Create (graph, 1);
		layer.ConnectInput (0, clipPlayable, 0);
		layer.SetLayerAdditive (0, true);
		layer.SetInputWeight (0, 1);
		output.SetSourcePlayable (layer);

		graph.Play ();
	}

	void OnDestroy()
	{
		graph.Destroy ();
	}
}